Steam-condensing plant.



D. B. MORISON.

STEAM CONDENSING PLANT.

APPLICATION FILED DEC. 12. 1916.

1,24L3,2@L Emma 0015. 16, 191?.

. 3 SHEET SSHEET 1.

D. B. MORISON.

STEAM CONDENSING PLANT.

APPLICATION FILED DEC. 12. 1916.

LQASQGL Patented 0st; 16, 1917'.

3 SHEETS-SHEET 2.

K Y 27 P1G.4 1% Z in D. B. MORlSON.

STEAM CONDENSING PLANT.

APPLICATION FILED DEC.12. 191s.

L fimo Patented Oct. 16,1917.

3 SHEETSSHEET 3- "a fwemw DONALD BABNS MOBISON, OF HABTLEPOOL, ENGLAND.

STEAM-CONDENSIN G PLAN '1,

Specification of Letters Patent.

Patented Oct. to, 1917.

Application filed December 12, 1916. Serial No. 136,586.

To all whom it may concern:

Be it known that I, DONALD 'BARNS Mom- SON, a subject of the King of Great Britain and Ireland, residing at Hartlepool, in the county of Durham, England, have invented the Improvements in or Relating to Steam- Condensing Plants of which the following is a specification.

This invention relates to apparatus for withdrawing condensate with or without condensing water from a main condenser under vacuum and delivering a part or the whole of the water to one or more auxiliary condensers under a pressure or pressures which is or are greater than the pressure in the main condenser and less than atmospheric, and through which auxiliary condenser or condensers the air withdrawn from the main condenser is discharged on its way to the atmosphere.

The object of my invention is to provide improved apparatus of the kind referred to, whereby condensate with or without condensing water can be delivered from the main condenser to the auxiliary condenser or condensers and to the atmosphere, either direct or otherwise, by a pump or pumps which may comprise one or more stages.

According to my invention, a pump or the first stage of a multi-stage pump withdraws condensate with or without condensing water from the main condenser, and another pump or the last stage of the multi-stage pump, together it may be with the first mentioned pump, discharges the water to-the atmosphere either direct or otherwise, a suitable water resistance or water head producing device (which may consist of the water discharge system in which resistance or head results from the pressure of theatmosphere) being provided on the discharge side of the pump or first stage which withdraws water from the main condenser. From such device or the pipe or passage leading thereto, one or more pipes are led to one or more auxiliary condensers, the arrangement being such that the water resistance or water head producing device causes a preferential supply of water to be delivered to the auxiliary condenser or condensers.

The water from the auxiliary condenser or condensers may be delivered into the main condenser or into the suction of one.

pump or into the suction of one or more stages of a pump. For example, when there are two or more auxiliary condensers under different pressures, the water from the auxiliary condenser or condensers under the lowest absolute pressure is delivered into the main condenser or into the suction of one pump or the first stage of a pump, and the water from the auxiliary condenser or condensers under higher absolute pressure is delivered into the suction of another pump or into the suctionof the second or later stages of the multi-stage pump. The pump or pumps which withdraw the water from the auxiliary condenser or condensers may deliver to the atmosphere through another auxiliary steam condensing device which is preferably in the form of a water jet ejector so that it will be self-discharging; a non-return valve or valves may be arranged in the pipes or connections for the purpose of preventing back-flow therethrough into the main condenser; and when found desirable, two or more water resistances or water head producing devices may be arranged between the stages of a pump with the object of supplying water to multiple auxiliary condensers in the manner described.

The accompanying drawings illustrate diagrammatically particular forms of my invention, the same letters of reference being used to denote similar parts. In Figures 1, 2 and 5 the main condenser is of the surface type, and in Figs. 3 and 4 the main condenser is of the direct contact type.

-. In Fig. 1, the condensate is withdrawn from the main condenser a by two pumps a, b, or by a two-stage pump a, b. The first pump or stage a delivers through a loaded valve (1 to the second pump or stage I which discharges to the atmosphere, and a pipe 6 is led from the connection between the first stage a and the loaded valve d, to two auxiliary condensers f and 9 working under different pressures, the resistance to the flow of water through the valve 03 being sufficient to cause a preferential supply of water to the auxiliary condensers. water from the auxiliary condenser f, which is under the lower absolute pressure, is discharged through a suitably looped pipe h and cock to into the main condenser c or into the suction of the first stage a of the pump, a vent pipe '0 being provided so that the air separated from the water may pass back into the main condenser. The condensate from the second auxiliary condenser g, which is under a higher absolute pressure, is discharged into the suction of the second stage The.

b. Valves Z and mare provided for controlling the quantity of water delivered to the auxiliary condensers, and with the object of preventing back-flow into the main condenser in the event of derangement, the valve 'm may'be of the non-return type.

2 isa modification of Fig. 1. In this arrangement ,the loaded valve d (shown in Fig. 1) is omitted and the necemary resistance to the flow of water is caused by a water head producing device in the form of an elevated receiver 01.. The first stage a, or its equivalent, discharges into this receiver through-the pipe e, and by means of the head of water so produced, a preferential supply of water is available for the auxiliary condensers. The supply of water for the auxiliary condenser f is taken from the pipe 6, and the supply of water for the auxiliary condenser g is taken from the lower portion of the receiver through the pipe 0, the remainder of the water flowing through the pipe u to the suction of the second stage 6. The receiver is provided at the top with a vent pipe j through, which air separated from the water may flow into the auxiliary condenser g and when desirable I may provide a non-return valve, such as the valve p, for preventing back flow into the main condenser. V

In Fig. 3 the condensate together with the condensing water are withdrawn from-a main direct contact condenser 0 by a pump t, and the pipe 6 is led from the discharge pipe 1' to the auxiliary condensersf and g to which a preferential supply of water is delivered by reason of the resistanceofi'ered to the flow of water from the pump t to the atmosphere, such resistance being due to the pressure of the atmosphere, or due to a water resistance or water head producing device which may be placed in the discharge pipe and used either continuously, or only when starting up the plant. The water is withdrawn from the auxiliary condensers f and g by a two-stage pump, the water from the auxiliary condenser f under the lower absolute pressure being discharged into the suction of the first stage a, and the water from the auxiliary condenser 9 under the higher absolute pressure bein charged into the suction of the secon stage I). In this arrangement, the Water delivered to the auxiliary condensers f and g absorbs the heat in the steam condensed therein, and can therefore advantageously be used for feeding the boilers.

In Fig. 1, which-is a modification of Fig. 3, the water from the auxiliary condenser f under the lower pressure is discharged into the main condenser or into the suction of the pump 25 through the looped pipe h, and the water from the auxiliary condenser 9 under higher absolute pressure is removed to the atmosphere by a single stage pump 6.

dis-

The arrangements described permit of the auxiliary condensers being supplied with water at the temperature at which -it leaves the main condenser and are particularly suitable for use in combination with'the air Withdrawing apparatus described in the specification of my application Serial N 0. 89459, filed 6th April, 1916, in which aerated vapor is withdrawn from the main condenser and the air discharged to the atmosphere by steam operated ejectors arranged in series with intermediate auxiliary condensers; and when the final steam ej ector discharges into a water jet ejector, a pump, according to my present invention, may conveniently discharge through such water ejector to the atmosphere.

For example, Fig. 5 illustrates my present invention (as described with reference to Fig. 1-), in combination with air withdrawing apparatus of the kind described in the specification of my application Serial No. 89459, filed 6th April, 1916. In this arrangement the auxiliary condensers are placed in series with steam operated ejectors w, y, 2, and the second pump or stage 12, instead of delivering direct to the atmosphere, delivers through a water jet ejector-condenser 8 into which the steam operated ejector z discharges.

In the arrangements herein described, the water pipes orconnections may be provided with means for the removal of free air, and suitable valves or cocks for regulating the supply of water to the auxiliary condensers and elsewhere may be fitted where required.

What I claim is:-

1. Steam condensing plant comprising a main condenser, an auxiliary condenser, a pump which withdraws -water from the main condenser, a pipe leading to said auxiliary condenser from the discharge system of said pump, and a suitable water resisting or head producing device so arranged in the Water discharge system as to cause a preferential supply of water to said auxiliary condensers.

2. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers, a pump which Withdraws water from the main condenser, a pipe leading to said auxiliary condensers from the discharge system of said ump, and a suitable Water resisting or hea producing device so arranged in the water discharge system as to cause a preferential supply of water to said auxiliary condensers.

3. Steam condensing plant comprising a main condenser, an auxiliary condenser through which air Withdrawn from the main condenser is discharged, a pump which withdraws water from the main condenser, a suitable water resisting or head producing device placed on the discharge side of said pump and a pipe leading to said auxiliary condenser from the connection be tween said pump and said device.

4. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers through which air withdrawn from the main condenser is discharged, a pump which withdraws water from the main condenser, a suitable water resisting or head producing device placed on the discharge side of said pump, and a pipe leading to said auxiliary condensers from the connection between said pump and said device.

5. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers, a multi-stage pump which withdraws water from the main condenser, a pipe leading to said auxiliary. condensers from the discharge system of the first stage of said pump, and a suitable water resisting or head producing device so arranged in said water discharge system as to cause a preferential supply of water to said auxiliary condensers.

6. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers, a multi-stage pump which withdraws condensate from the main condenser, a pipe leading to said auxiliary condensers from the discharge system of the first stage of said pump, and a suitable water resisting or head producing device so arranged in said water discharge system as to cause a preferential supply of condensate to said auxiliary condensers.

7. Steam condensing plant comprising a main condenser, an auxiliary condenser, a pump which withdraws water from the main condenser, a loaded valve placed on the discharge side of said pump, and a pipe leading to said auxiliary condenser from the connection between said pump and said loaded valve.

8. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers, a pump which withdraws water from the main condenser, a loaded valve placed on the discharge side of said pump, and a pipe leading to said auxiliary condensers from the connection between said pump and said loaded valve.

9. Steam condensing plant comprising a main condenser, an auxiliary condenser through which air withdrawn from the main condenser is discharged, a multi-stage pump which withdraws water from the main condenser, a pipe leading to said auxiliary condenser from the discharge of one of the stages of said pump, and a suitable water resisting or head producing device so arranged between two stages of said pump as to cause a preferential supply of water to said auxiliary condenser.

10. Steam condensing plant comprising a main condenser, an auxiliary condenser through which air withdrawn from the main condenser is discharged, a multi-stage pump which withdraws condensate from the main. condenser, a pipe leading to said auxiliary condenser from the discharge of one of the stages of said pump, and a suitable water resisting or head producing device so arranged between two stages of said pump as to cause a preferential supplv of condensate to said auxiliary condenser.

11. Steam condensing plant com 'irising a main condenser, a plurality of auxiliary condensers through which air withdrawn from the main condenser is discharged. a multistage pump which withdraws water from the main condenser, 21. pipe leading to said auxiliary condensers from the discharge of one of the stages of said pump, and a suitable water resisting or head producing device so arranged between two stages of said pump as to cause a preferential supply of water to said auxiliary condensers.

12. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers through which air withdrawn from the main condenser is discharged, a multi stage pump which withdraws condensate from the main condenser, a pipe leading to said auxiliary condensers from the discharge of one of the stages of said pump, and a suitable water resisting or head producing device so arranged between two stages of said pump as to cause a preferential supply of condensate to said auxiliary condensers.

13. Steam condensing plant comprising a main condense-r, a plurality of auxiliary condensers through which air withdrawn from the main condenser is discharged, a multistage pump which withdraws water from the main condenser, a loaded valve placed between two stages of said pump, and a pipe leading to said auxiliary condensers from the connection between said pump and said loaded valve.

14. Steam condensing plant comprising a main condenser. an auxiliary condenser, a pump which withdraws water from the main condenser, a pipe leading to said auxiliary condenser from the discharge system of said pump, a suitable water resisting or head pro-' ducing device so arranged in the water discharge system as to cause a preferential supply of water to said auxiliary condenser, and a pipe through which water is delivered from the auxiliary condenser into the main condenser.

15. Steam condensing plant comprising a main condenser, an auxiliary condenser, a pump which withdraws water from the; main condenser. 21 pipe leading to said auxiliary condenser from the discharge system of said pump, a suitable water resisting or head producing device so arranged in the water discharge system as to cause a preferential supply of water to Said auxiliary condenser, and a water sealed passage through which Water is delivered from the auxiliary condenser into the main condenser.

16. Steam condensing plant comprising a.

main condenser, an auxiliary condenser, a pump which withdraws water from the main condenser, a pipe leading to said auxiliary condenser from the discharge system of said pump, a suitable water resisting or head producing device so arranged in the water discharge system as to cause a preferential supply of water to said auxiliary condenser, and a pipe through which water is delivered into the suction of said pump.

17. Steam condensing plant comprising a main condenser, an auxiliary condenser, a pump which withdraws water from the main condenser, a pipe leading to said auxiliary condenser from the discharge system of said pump, a suitable water resisting or head producing device so arranged in the water discharge system as to cause a preferential supply'of water to said auxiliary condenser, and pipe connections through which water is delivered into the main condenser and into the suction of said pump.

18. Steam condensing plant comprising a main condenser, an auxiliary condenser, a pump which withdraws water from the main condenser, a pipe leading to said auxiliary condenser from the discharge system of said pump, a suitable water resisting or head producing device so arranged in the water discharge system as to cause a preferential supply of water to said auxiliary condenser, and a cock connecting said auxiliary condenser with the main condenser and the suction of said pump for the purpose hereinbefore set forth.

19. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers, a multi-stage pump which withdraws Water from the main condenser, a pipe supplying condensing water to said auxiliary condensers from the discharge of one of the stages of said pump, a water resisting or head producing device so arranged bctween two stages of said pump as to cause a preferential supply of water to said auxiliary condensers, a pipe for the discharge of water from one auxiliary condenser to the main condenser, and another pipe for the discharge of water from another auxiliary condenser to a stage of said multi-stage pump. a

20. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers, a multi-stage pump which withdraws water from the main condenser, a pipe supplying condensing water to said auxiliary condensers from the discharge of one of the stages of said pump, a water resisting or head producing device so arranged between two stages of said pump as to cause a preferential supply of water to said auxiliary condensers, a pipe for the discharge of water from one auxiliary condenser into the suction-of the first stage of said multi-stage pump, and another pipe for the discharge of water from another auxiliary condenser into a later stage of said multi-stage pump.

21. Steam condensing plant comprising a main condenser, a plurality of auxiliary condensers, a multi-stage pump which withdraws water from the main condenser, a pipe supplying condensing water to said auxiliary condensers from the discharge of one of the stages of said pump, a suitable water resisting or head producing device so arranged between two stages ofsaid pump as tovcause a preferential supply of water to said auxiliary condensers, pipe connections for the discharge of water from one auxiliary condenser to the main condenser and to the suction of the first stage of said multi-stage pump, and a pipe for the discharge of water from another auxiliary condenser into a later stage of said multi-stage pump.

22- Steam condensing .plant comprising a main condenser, a plurality of auxiliary condensers through which air withdrawn from the main condenser is discharged on its way to the atmosphere, a pump which withdraws ater from the main condenser, a pipe supplying condensing water to said auxiliary condensers from the discharge system of said pump, a suitable Water resisting or head producing device so arranged in the water discharge system as to cause a preferential supply of water to said auxiliary condensers, and a non-return Valve arranged in the system for the purpose of preventing back flow into the main c0ndenser.

23. Steam condensing plant comprising a main condenser, a steam operated ejector for withdrawingaerated vapor from the main condenser, an auxiliary condenser into which air and steam from said ejector are discharged, a pump which withdraws water from the main condenser, a pipe leading to said auxiliary condenser from the discharge system of said pump, and a suitable water resisting or head producing device so arranged in the water discharge system as to cause a preferential supply of Water to said auxiliary condenser.-

24:. Steam condensing plant comprising a main condenser, a steam operated ejector for withdrawing aerated *vapor from the main condenser, an auxiliary condenser into which the air and steam from said ejector are discharged, a second steam operated ejector for withdrawing aerated vapor from said auxiliary condenser, a second auxiliary condenser into which said second ejector discharges, a pumpwhich withdraws water from the main condenser, a pipe leading to said auxiliary condensers from the discharge system of said pump, and a suitable Water resisting or head producing device so arranged in the Water discharge system as to cause a preferential supply of Water to said auxiliary condensers.

25. Steam condensing plant comprising a maincondenser, a steam operated ejector for withdrawing aerated vapor from the main to the atmosphere, a pump which Withdraws water from the main condenser, a pipe leading to said auxiliary condensers from the discharge system of said pump, and a suitable Water resisting or head producing device so arranged in the water discharge system as to cause a preferential supply of Water to said auxiliary condensers.

26. Steam condensing plant comprising a main condenser, a steam operated ejector for Withdrawing aerated vapor from the main condenser, an auxiliary condenser into which the air and steam from said ejector are discharged, a second steam operated ejector for Withdrawing aerated vapor from said auxiliary condenser, a second auxiliary condenser into Which said second ejector discharges, means for discharging aerated vapor from said second auxiliary condenser to the atmosphere, a two-stage pump which withdraws water from the main condenser, a loaded valve placed between the two stages of said pump, a pipe supplying condensing Water to said auxiliary condensers from the discharge from the first stage of said pump, a pipe through Which Water is discharged from the auxiliary condenser under lowestabsolute pressure into the main condenser and into the suction of the first stage of said pump, and a pipe through which Water is discharged from the other auxiliary condenser under a higher absolute pressure into the suction of the second stage of said pump.

Signed at West Hartlepool, in the county of Durham, England, this twenty-seventh day of November, 1916.

DONALD BARNS MORISON.

WVitnesses:

S. ARMSTRONG, W. E. LOVERIDGE. 

